patch 8.2.3425: warning for using uninitialized variable

Problem:    Warning for using uninitialized variable.
Solution:   Initialize it. (John Marriott)
diff --git a/src/version.c b/src/version.c
index 75d083e..05331a6 100644
--- a/src/version.c
+++ b/src/version.c
@@ -756,6 +756,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    3425,
+/**/
     3424,
 /**/
     3423,